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Just setup docker toolbox in Windows 10 and I am having a little issue with my docker containers. When I do docker-compose up, the instance will start but nothing is mounted in my /var/www/html directory. If I open Kitematic I see the container and when I click on volumes I do not see the local folder set. Here is what my docker-compose.yml looks like.
web:
build: .
ports:
- "80:80"
volumes:
- app/:/var/www/html/
Do I need to specify the absolute path to my local directory? The app directory is in the same folder as the docker-compose.yml file.
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Multiple containers can mount the same volume. Running docker-compose up will create a volume named <project_name>_html_files if it doesn't already exist . Then run docker volume ls to list the two volumes created, starting with the project name.
The most notable difference between the two options is that --mount is more verbose and explicit, whereas -v is more of a shorthand for --mount . It combines all the options you pass to --mount into one field. On the surface, both commands create a PostgreSQL container and set a volume to persist data.
In addition to @VonC answer, it's different when using docker-compose since the docs mention
You can mount a relative path on the host, which will expand relative to the directory of the Compose configuration file being used. Relative paths should always begin with
.or..
109
Do I need to specify the absolute path to my local directory?
Yes. The doc mentions:
The
host-dircan either be an absolute path or a name value.
- If you supply an absolute path for the
host-dir, Docker bind-mounts to the path you specify.- If you supply a name, Docker creates a named volume by that name.
In your case, app/ would be considered as a name, not as a host folder.
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